1. I like this, but the center of the flower seems unfocused, Its good to have the pedals with the water droplets in focus, but it bothers me with the center like that, the center should always be the focal point from that POV. Also the harsh shadows behind the flower are bothering me.
The last two are ok, too soft, I like black and whites to be just that, not grayish, the tree one is crooked, they is annoying, and the third one doesnt really have anything interesting to offer.